Johann Wiltheis, a farmer, his wife Maria, and son Johann (age 3) arrived from Lübeck at the port of Oranienbaum on 8 August 1766 aboard the galliot Anna Katharina under the command of Skipper Johann Joachim Janson.
Johannes Wildeiss, his wife Margreta, and son Johannes (age 3¾) are recorded on the list of colonists being transported from St. Petersburg to Saratov in 1767.
They are recorded on an appendix to the 1767 census of Paulskaya (No. 49). The Wiltheis family is recorded on the 1798 census of Basel in Household No. Bs28.
The Oranienbaum passenger list records that Johann Wiltheis came from the German region of Solms. The 1767 census records that he came from the German village of Seeheim.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Bs28.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 3 (Göttingen: Göttinger Arbeitskreis, 2005): 361.
- Pleve, Igor. Lists of Colonists to Russia in 1766 (Saratov: State Technical University, 2010): #3960.
- Rauschenbach, Georg. Deutsche Kolonisten auf dem Weg von St. Petersburg nach Saratow: Transportlisten von 1766-1767 (Moscow: G.V. Rauschenbach, 2017): #6070-6072.